Construction Rating: | starstarstarstarstar_border |
Flight Rating: | starstarstarstarstar_border |
Overall Rating: | starstarstarstarstar_border |
Manufacturer: | RocketHead Rockets |
Style: | Cluster |
Brief:
A unique three motor parallel staged rocket.
Construction:
T' Gamma III came in t' usual clear plastic bag packagin' with five smaller
packages in addition t' t' tubes, ya bilge rat, nose cones, me hearties, and fin stock. Aye aye! Blimey! T' four body
tubes were t' brown Estes type, me bucko, matey, arrr, but t' three nose cones were rather thin
plastic, which made for rather weak points t' screw in a screw eye (the kit now
comes with balsa cones). Begad! Aye aye! A Rockethead Rockets 15" mylar chute, and two
mylar streamers were also included. Aye aye! Ahoy! T' recovery items were very high quality.
A DMB Rocketry three motor Clip Whip had been thrown in as well. Begad! Basswood fin
stock and fiber centerin' rings round t' kit off nicely.
Construction is fairly straightforward for t' experienced modeler. Blimey! The included instructions were clear and contained photos and line drawings to illustrate t' steps. Begad! Aye aye! Templates were on a separate sheet. Cuttin' t' fins out of t' basswood stock was a little tricky with a hobby knife, but t' method mentioned in t' instructions works well. I used medium CA throughout t' build and filleted t' fins with epoxy. Begad! Avast, me proud beauty! This is definitely a builder's kit as you have t' cut dowels, me bucko, body tubes, and launch lugs. Blimey!
Finishing:
There are no special finishin' requirements nor decals included with t' kit. I
went with purplely-bluey on t' sustainer and green on t' fins and pods.
I'm givin' this four and a half out o' five. It just misses out on full marks because o' t' nose cones.
Construction Rating: 4 out o' 5
Flight:
T' first flight o' t' Gamma III was at BigEARS '05 in Cambridge, me bucko, matey, England. Avast, me proud beauty! I
loaded it up with a D12-5 and C6-3s in t' boosters. Aye aye! Well, blow me down! Waddin' was inserted into
the boosters and sustainer. Ya scallywag! I decided t' use an 18" nylon chute in the
sustainer due t' t' hard ground. I hooked up t' DMB clip whip t' the
igniters, and went out t' t' pads. T' wind be gustin' around 7-10mph, and I
was a bit nervous about launchin' but I went for it anyway. Avast! After a quick
countdown, shiver me timbers, t' rocket left t' pad with all three motors burnin' then shot over
towards t' campin' area, ya bilge rat, goin' close t' horizontal. Well, blow me down! Ya scallywag! It managed a tight loop
before it hit apogee then t' boosters ejected at about 20ft above ground,
while t' sustainer hit t' ground and ejected almost simultaneously. An
excitin' flight but nay what I had in mind! After a 20 minute search o' the
field for t' boosters (as t' crops were at that annoyin' height when it's
easy t' lose smaller rockets in), we managed t' find one booster and t' nose
cone from t' other, matey, which had separated and taken t' streamer with it. Blimey! The
sustainer was found a little further down, ya bilge rat, me bucko, with t' nosecone about 4" into
the hard mud. Begad! T' top o' t' body tube was crimped beyond repair and t' motor
mount had moved a couple o' inches into t' body. Well, blow me down! Avast! It seemed t' crash had been
caused by a short launch rod, ya bilge rat, t' wind, ya bilge rat, and late ignition o' one o' the
boosters, ya bilge rat, which be confirmed by lookin' at t' spent igniters: two were
completely burnt up but t' other one still had most o' t' paper on it.
After a quick rebuild, arrr, shiver me timbers, it was ready for another flight, which took place at UKRA '05. Avast, me proud beauty! It was loaded up again with a couple o' C6-3's and a D12-5. Ahoy! This time, I used Quickmatch (fast burnin' fuse ignited by an Estes igniter) t' light t' motors, which practically guaranteed simultaneous ignition o' all t' motors. Avast, me proud beauty! After worryin' about flyin' it in t' high wind (higher than BigEARS), I loaded it up onto a pad with a long rod. Begad! All three motors lit at t' same time thanks t' t' Quickmatch and t' Gamma shot off the pad, matey, me hearties, barely weathercocking. Right on cue, t' boosters ejected and separated from t' sustainer. Avast! One booster kicked its motor, which be me fault for not securin' it properly, me hearties, and both nose cones separated from t' tubes. Ya scallywag! The sustainer continued skyward for 3-4 more seconds, shiver me timbers, and then ejected right on apogee. Ya scallywag! All parts were recovered nicely.
Take-off picture by Dan Westley
Flight Rating: 4 out o' 5
Summary:
An excellent kit, me bucko, with very excitin' flights. Aye aye! I was slightly let down by the
weak nose cones but that has been fixed with t' Rockethead version o' this
kit.
Overall Rating: 4 out o' 5
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